Raw idea: to create an english web blog for your business is a great idea if you target international market. It is also much easier than create an english version of complete website (for those who is neither in England nor in US, but for example in Germany, like we), especially if the web site is complicated and has much content. On the other side, a blog needs less start time/money investing, but it needs standing efforts. Any way with blog you could expose your business much better to potential customers in other countries and add value to your native language web site.

If you want to start a professional blog, here’s the absolute minimum that you need:

1. A profitable topic that is in demand
2. A unique angle to your subject that will differentiate you from your competition
3. A willingness to learn and follow instructions
4. Web hosting and domain name
5. A determination to see your project through the tough times
6. A focus on building a regular readership – on bringing eyeballs to your blog and then on making sure they come back for seconds (RSS subscriptions)

I think the 4th is not the-must, we can go with wordpress.com for example or typepad. Take a look Scobleizer!